Valve grinder



H. DENIS.

VALVE GRINDER. APPupA'non man nus-30. I921.

Patented Nov. 28,- 1922..

a (I 0 2 Z I 1- 1 3 E 9 I a 2 4 2. o 4 7 I 1 1 Henry Denis Patent d Nev;as, 19 22;

harass ENRY, Denis. or HAYDEN, RIZONA.

VALVE GRINDER.

Applicatiou'filed August so, 1921. Serial No. 496,843;

To all whom it may concern."

' Be it known thatl, HENRY DENIs, a citizen of the United States,residing at Hayden, in the county of Gila and State of Arizona,

have invented new and useful Improvements nature of a tool in ValveGrinders of which the following Y is a specification.

The present invention has reference to' a fluid operated tool and isespecially in the for grinding the valves of engines. Y

The primary object of theinvention is to produce a machine of thischaracter in which the fluid acts on' a piston to reciprocate '15 "thesame and wherein the movement of the caused to move in both directions;

piston operates a shaft which is connected to the valve to be groundand'which' actuates a valve that controls the admission of the fluid tothe piston' whereby the piston is A, further object is to prod'ucealfluid operated tool, in the nature of a valve grinder in which a pistonhas aribbed hub, the ribs of which being received in spiral grooves in ashaft'which is removably connected to thevalve to be ground, and thesaid shaftcoir trolling the valve which regulates the admisv sion offluid to the piston, whereby such fluid will be delivered to theopposite faces of the piston and also whereby a rotary movement inbothdirections is imparted to the shaft.

The foregoing'and other objects which a Figure 3"is a transversesectional-"view on.

the line of Figure'2. I

Figure 4 is alsimilar sectional view on the line4 -4of Figure 2. Y i"Figure 5 is an edge'view of the valve."

. Ref rring now to the "drawings in detail,

the numeral.- :1. designatesaynauar which! pressio'ns or recesses withthe result V I, "will cause the valve 12-to be also turned and hasbothends closed by heads 2 and 3 re-. 7

spectively. Y lit-desired, the heads .may be screwed into the cylinder,and each head is providedwith registering pairs of openings one of whichbeing threaded and in which is screwed oneend of tubes 4 and 5respectively The opposite ends ofthe -tubes are received Y in thenon-threadedopenings.' The ends of I the tubes 4 andj5 projectthroughthe head 2, butgthe saidfends are closedby cap nuts 6 respectively whichalso contact with the outer face otthe head.

- ,Tl1e head 3 is centra-lly provided upon its outer face with anenlargement in the nature of anannular hoss7, an dithe openings in whichthe tubes l and 5 are received communicate with; inwardly directed anglek branches 8 and 9 respectively in the boss 7.- ,Theboss is centrallyformed with an annular pocket 10 which, however, is closed by acap plate"11, the said plat'ebeing boltedto the said boss.v Y Y lnthe pocket 10aivalveyl2. The

valve is round in'lplan, beingof a size tobe snugly received'inthe saidpocket, and the said valve has its sides formed with depres Y sionsproviding fiu'idpassages B and ltrespectively, and the shoulders betweenthe passages provide what I will term vanes 15.

The valve iscentrally formed with a round openinwhich receives thereinone end of a shaft 16, the shaft passing through central openings in theheads 3 and. 2. (The shaft, at the end thereof which is received nv thevalve 12 is provided with a transverse ele- 'Inent whichniay bein thenature of a pin 17,=and the ends of the said pinare received indepressions 18 and 19 respectively in the valve 12which communicateswith the opening therein in which the shaft 16 isre'ceived.

The opposed walls provided bythe-depresv :sions or recesses'18 arearranged at an in- "ward: angle with respect to each otherv so that whenthe shaft is inyone position, the

opposed sides or faces of the pin will con- Y "tact with the opposed endwalls of the de- 18. and 19v respectively,

that the turningof the shaft the vanes 15 to be brought to close one ofthe ports, say 8and openthe otherportgwhen -itluid isiadmitted through/the nlet port in the boss *1" of the head 3. The out-- let port for thefluid indicated by the nu meral 21 is disposed diametrically oppositethe inlet port 20, and both of these ports alternatively are incommunicationwith the )assa es 13 and 1 1 of the valve 12. l a q Theshaft 16 at the uortion thereor which Z l passes through the head; isrece ved. throu h a bUSlllllQ 22 that 1s screwed 1n the said head, thesaid bushing having its inner" face )reterabl flanged the flange bein lO 7 c. 2:

seated in the head 3, and-thesaid' l'lan'g'e is" provided with anannular depression formmg a raceway,forantlfrictional balls 23, the

balls being also received in a'raceway provided upon a thrust bearing24: on the shatt'lti. The portion o'fthe shaft which passes through thehead 2 is also received in 'a bushing 25 screwed or otherwise letthrough the head, and this bushing may, if desired, be provided witharaceway for anti-frictional elements that are also received in asiinilarraceway in a'thrust bearing 26 on the shaft 16. The shaft 16 has its endwhich passesthroughthe head 2 flanged, as at 27, the said flanges beingprovided with depending pins 28 to be received 111 slots or depressions1n the valve to be ground.

" The shaft 16, between the thrust bearings 2 1 and 26. is provided withspaced spiral grooves 29 respectively that receive therein ribs 30respectively provided in the bore of a piston 31. The piston has roundopenings and 33 respectively therethrough, the tube 4t passing throughthe opening 32 and the tube 5 passing through the opening The openings32 and 33 have arranged. therein bushings 34c and 35' respectively whichare in contact with the'tubes 1 and 5, and the periphery of the piston31 is provided with the usual piston rings which are in contact with thebore of the cylinder 1.

We will suppose the parts to be in the positionillustrated in Figure 3of the draw- Fluid, from any desired source, is delivered through theport 20 and Wlll be directed through the passage 13 into the port 8 oneor"- the vanes 15 being brought [to uncover the port 8 and the othervane 15 being brought to cover the port 9 with respect to the fluidinlet. The piston is near will turn the pin 17 to bring the same out ofcontact with the shoulders 38, and

3Qwhich provide the end walls of the'depressions 18 and 19 respectivelyto cause the said pin toicontact with the opposite end walls 40 and 41of the said depressions 19 and 18. The piston has not yet reached thelimit of its stroke, and "further turns the shaft 16 to cause the pinsto move the valve 12 to bring the vanes to close the port with respectto the fluid inlet 20 and to uncover the port 9 for the inflowing fluid.The

fluid already in. the cylinder will find an verse direction.

This operation is continued as long as fluid is admitted into the port20.

It is believed that the foregoing description, when taken in connectionwith the drawings will-fully set forth the construction, operation andadvantages of the improvement. it being obvious that either the ports 20or 21 maybe employed respectively fluid inlet or fluid outlet ports andalso that the nature of the invention is such as to render the samesusceptible to minor changes in proportion, material employed in suchdetails of construction which depart from the'description and showingbut which fall within the scope of what is claimed. 1

Having described the invention, I claim Lln a device oii' the classdescribed, a cylinder, a piston movable therein, tubes in the cylinderpassing through the piston,'said cylinder having fluid admission portscom municating with the tubes and the respective tubes havingfluidoutlet ports adjacent their opbosite ends, saidcylind'er having outletports between the fiuid inlet ports, ashaft influenced by the piston forrotary movement in opposite directions, a valve having groovesconnnunicating with the ports. and vanes the terminal ot said grooves,and means bet-ween the valve and shaft for causing the latter toinfluence the former and control the fluid admission and outlet. portswhen the piston has reached the limit of its movetherein the ends of thepin whereby said entering the valve and having a spirally pin maycontact with the end Walls provided grooved portion passing through thebore of by the depressions to move the valve to conthe piston andreceiving the ribs in said trol the ports when the shaft isinfluenced'lo grooves, in finger on the end of the shaft reby the pistonat the limit of the reciprocaceived in the valve, and said valve havingtory movement of the piston.

oppositely disposed depressions receiving In testimony whereof I affixmy si nature.

HENRY D NIS.

